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Pmos Inverter Circuit

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36 Threads found on edaboard.com: Pmos Inverter Circuit
Hi hetira, If in your schematic the pmos Source(S) of the inverter is connected to VDD then it should be fine. Normally NWell is tied to positive potential which is VDD then it is not short circuit it is intended. Cheers, fixrouter
On the transistor level, it's an inverter followed by a open drain pmos transistor switching to Vdd. On the gate level, use a tristate driver with high active enable.
If Vth is your inverter threshold then there is a unique case (width ratio) where NMOS ID(Vth) = pmos ID(VDD-VTH). This will differ as VDD changes. You probably care most about VDDmin as this is your most challenging timing case. It will change with process and temp as well. It will also change when you start stacking and paralleling transistors i
Hi ed_gops, In the circuit the NMOS in the middle arm is used as a capacitor. 1st inverter o/p is logic 0 so it turns ON the middle pmos. The middle stage o/p is therefore almost VDD (1.199V). This turns on the last stage NMOS and a constant current is drawn. As the last stage pmos is diode connected the O/P is constant at (...)
Hi all: I use a high voltage tech. The high voltage pmos/NMOS operation condition: a. vds : 0~40V b. vgs : 0~5V c. VDD is 40V I need some logic cells to control the circuit, do you have suggestion for design an inverter? Thanks for your reply. mpig
Hi all, I'm finding difficulty to pass CDF parameters from a lower level cell to higher level cell in a circuit. Its the first time that I try to use CDF parameter in a hierarchical design. I designed an inverter with wp, wn, lp and ln (Width of pmos and NMOS + length of pmos and NMOS) as CDF parameters. A more complex (...)
Hello, I have circuit in CADENCE, in which I use a cmos inverter with 5 finger for pmos and 4 finger for nmos. I have another pmos in the same design with 10 fingers. When I do the LVS, it fails because it can not relate the inverter in the layout to the inverter in the schematic. and says (...)
Hi All If we replace the nmos in inverter with pmos what will be the output i.e top pmos source is given to 3.3v supply and its drain is connected to bottom pmos source and bottom pmos drain is ground. Both gates are short and if input =0 what is the output.??
In an inverter circuit if the following condition lies for input voltage Vin = Vdd/2 , Vdd=5V then (a) n-mos will be in cut off and p-mos will be in linear region (b) n-mos will be in linear and p-mos will be in cut off region
How will my output vary, when I replace pmos in my inverter with nmos. So now we have 2 nmos connected in series. Vdd = 1v and vth = 0.25 v.
69038 as the graph shown, what is the problem if I design a such inverter? Note the pmos and nmos are not as usaual. Thanks in advance.
The NMOS may not open even if high voltage. Also the bulk/substrate voltage may matter here. The topmost pmos may be reverse -biased
Hi all, I am doing a parametric analysis on an inverter by using Spectre. The PDK used is GPDK045 from Cadence. The circuit and setting are shown in tha t63415634166341763418. My question is beside W(The Width of pmos), what are other 3 variables(
pmos is correct. In most of charger IC design, it uses Power pmos. However, in Jeet's schematic, the charging current is not well controlled. It might be not good for battery lifetime.
Hi all, I am studying USB 1.1 PHY IC USB1T11A now, but the speed control confuses me. In this circuit, the part of speed control doesn't get an op amp to control the rise and fall times, it just uses the speed control pin to open or close an NMOS connecting to an inverter by a res and a pmos connecting to an inverter by a (...)
When the pmos and nMOS in the inverter are turned off, the path from VDD to Ground exists with resistances, so the output of it is in the state of "High-Z" (High Impedance) I know that both resistors in the pmos and nmos exist in the path of output. For the case of Hi-Z at the output port, what is the approximate voltage range of the high (...)
i'm building a inverter DC-AC (240V)with 2 pmos and 2 nmos. These mosfet's are using opto coupler and darlington npn to drive the gate. i'm facing problem on the connection between opto-coupler and darlington npn and the mosfet,can anyone help?...Besides,izit any test board can use to test my circuit which supply 240V?....
i'm building a inverter DC-AC (240V)with 2 pmos and 2 nmos. These mosfet's are using opto coupler and darlington npn to drive the gate. i'm facing problem on the connection between opto-coupler and darlington npn and the mosfet,can anyone help?...Besides,izit any test board can use to test my circuit which supply 240V?....
Can any on tell me Advantages and disadvantages of, Slow and Fast Input/Output SLEW. As far as i know, Slow slew, makes the pmos n NMOS of inverter on for an long time, causing short circuit current. what ould be the problem with fast slew and why SLEW has to be in Low and High limits?
Add a pmos in series with your existing pmos device, also connected to the disable signal. This will allow your disable NMOS to pull down against no load.


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